import java.util.*;

public class Main {
    public static void main(String[] args) {
        int count = 0;
        Scanner scanner = new Scanner(System.in);

        //write your code here......
        while(true){
            if(scanner.nextInt()>0){
                count++;
            }
            else{
                System.out.println(count);
                break;
            }
        }

    }
}